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Designed for use with your trolling system, the Minn Kota® MK 315D On-Board Digital Charger features 3 banks and a total output of 15 amps (5 amps per bank) to restore deep cycle batteries at a 60% discharge with a recovery time of 10 - 12 hours . 4"H x 7-1/2"W x 12-1/2"L.

Features and Benefits

Restores deep-cycle batteries at a 60% discharge with a 10 - 12 hour recovery time

4"H x 7-1/2"W x 12-1/2"L

15 amp output (5 amps per bank)

What's in the Box

Minn Kota® MK 315D On-Board Digital Charger

Product length (in.):
12.5

Amps:
15

Number of banks:
3

Product height (in.):
4

Product width (in.):
7.5

Product weight (lb.):
14

Rated 2 out of
5 by
sea ray from
Not big enoughPurchased to charge start and house batteries on a 37 foot Sea Ray, just not enough amps to keep up.

Date published: 2016-04-26

Rated 5 out of
5 by
dedandy1 from
Great onboard chargerI added this to my boat so I wouldn't have to plug in 3 chargers everytime I fished. This has saved me time and effort.

Date published: 2015-10-29

Rated 4 out of
5 by
caphook from
works but getaget a hotWorks but gets hot is that normal? I have 3 29s batterys were real low when charged

Date published: 2015-09-07

Rated 5 out of
5 by
Mike 81012 from
Perfect for what I needed.I bought this about a month ago and it was a better price than I could find anywhere.

Date published: 2015-05-13

Rated 5 out of
5 by
rcy2 from
awesome productThis is a must have for any boater with a three bank battery system. Very easy to install, and simple indicater system makes it easy to see battery conditions....love it love it..

Date published: 2015-04-09

Rated 4 out of
5 by
jchunts from
serves its purposeHad to upgrade from a 2 bank to a 3 bank. I have had this charger for a month and have not had issues with it. I did loose a bank on 2 different mk210s. The last one was only in use for 6 months before it went out. Minn kota will replace them as long it is within 2 years of original purchase

Date published: 2015-04-04

Rated 5 out of
5 by
SI Outdoorsman from
Outstanding product.Charger mounts easily and has worked flawlessly. Charges 2 27 series trolling batteries and a starting battery overnight with ease after full use.

Date published: 2015-03-24

Rated 4 out of
5 by
JJWorm87 from
Works great!Works great, east to install and actually looks great mounted in my bass boat. Only went with 4 stars because I've only had it a month. Hoping it last for years!

From time to time, Academy Sports + Outdoors runs sweepstakes in connection with its Ratings and Reviews. Certain of the reviews posted above on this page may have entitled the author to a sweepstakes entry.

Where is the serial number on the charger?

Asked by: Cobby

Hello Cobby,
The Minn Kota® MK 315D On-Board Digital Charger comes with an adhesive label that lists the serial and model numbers that is attached to the AC power cable and bottom of the charger. The serial number format is MKAD1234567 or J123MK12345.

Answered by: smartinez

Date published: 2016-10-07

What would cause the charge light to Blink in one bank

Asked by: Old wild man

Hello Old wild man,
We recommend reaching out to the manufacturer for technical inquiries. You can reach Minn Kota by visiting www.minnkotamotors.com or by calling 800-227-6433.

Answered by: KimberlyR

Date published: 2016-08-09

Is this system designed to work in a salt water environment? what kind of corrosion resistant design does it have?

Asked by: Mcgyver1983

Unit is made of plastic, steel and aluminum. Nothing in manual that prevents or warns from use in salt water environment. I would suggest cleaning unit with water and baking soda to neutralize the corrosion that may build up. That environment will be tough on any metal product. No matter what you do. Another suggestion, ground unit with sacreficial annode that will corrode before the battery charger.

can you use this charger to charge trolling batteries and cranking battery just bought one and have not installed it yet

Asked by: farmer rod

Hello farmer rod,
Designed for use with your trolling system, the Minn Kota® MK 315D On-Board Digital Charger features 3 banks and a total output of 15 amps (5 amps per bank) to restore deep cycle batteries at a 60% discharge with a recovery time of 10 - 12 hours . 4"H x 7-1/2"W x 12-1/2"L.

Answered by: Tpayne2

Date published: 2015-06-12

can i come pick this item up today or do you have to order it?

Asked by: Roddd

Hello Roddd,
Inventory availability is subject to change. Please contact our Customer Service Center at (888) 922-2336 for questions regarding product availability. We are available Monday-Sunday 7:00AM-12:00AM CST. We are also available via Live Chat 24/7 at www.academy.com.

Answered by: Ckirt

Date published: 2015-04-17

Gel Cell Batteries on my unit...what does the manufacturer provide in the way of this use?

Asked by: txscdn

Hello, txscdn.
Inventory availability and pricing are subject to change, please contact your local Academy Sports + Outdoors store directly or our Customer Service Center at (888) 922-2336 for current availability and pricing. We are available Monday - Sunday from 7:00 am - 12:00 am (CST) and you may, also, reach us by live chat 24 hours a day / 7 days a week.

Answered by: KimberlyR

Date published: 2015-03-07

I have 2 Deep Cycle batteries and 1 Cranking battery. Will this work for my cranking battery as well?